comments stretching page

ok i used this tutorial, i also use the shrinking and centering. this is copied exactly word for word, and my layout still stretches on the comment pages. it is supposed to shrink the comment headers and it hasnt. i am pretty good with component layouts, and i cannot figure out why it will not stop stretching each time i get a new comment :/

i have adjusted the width on the tables and nothing worked.. anyone have any ideas?